Comment 13 for bug 1870140

Hi there, I have upgraded to Kubuntu 20.04 and the bug still occurs with Kernel 5.4.0-37-generic
Is there anything I can do to provide more information? Or is there another kernel I should use?

$ uname -a
Linux 5.4.0-37-generic #41-Ubuntu SMP Wed Jun 3 18:57:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -a
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal

kernel: [ 559.983153] BUG: kernel NULL pointer dereference, address: 00000000000002de
kernel: [ 559.983162] #PF: supervisor read access in kernel mode
kernel: [ 559.983165] #PF: error_code(0x0000) - not-present page
kernel: [ 559.983168] PGD 0 P4D 0
kernel: [ 559.983176] Oops: 0000 [#1] SMP NOPTI
kernel: [ 559.983182] CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.4.0-37-generic #41-Ubuntu
kernel: [ 559.983185] Hardware name: LENOVO 20N80029GE/20N80029GE, BIOS R0YET43W (1.26 ) 03/30/2020
kernel: [ 559.983198] Workqueue: events ucsi_connector_change [typec_ucsi]
kernel: [ 559.983211] RIP: 0010:typec_altmode_update_active+0x1f/0x100 [typec]
kernel: [ 559.983216] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00 00 55 48 89 e5 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 45 e8 31 c0 <0f> b6 87 dc 02 00 00 83 e0 01 40 38 f0 0f 84 95 00 00 00 48 8b 47
kernel: [ 559.983220] RSP: 0018:ffffbde7400b7db8 EFLAGS: 00010246
kernel: [ 559.983224] RAX: 0000000000000000 RBX: ffff99ad0da16270 RCX: 0000000000000000
kernel: [ 559.983227] RDX: ffff99ad0c2d3628 RSI: 0000000000000000 RDI: 0000000000000002
kernel: [ 559.983231] RBP: ffffbde7400b7dd8 R08: 0000000000000219 R09: 000000000042061e
kernel: [ 559.983234] R10: 0000000000001168 R11: 0000000000000000 R12: 0000000000000000
kernel: [ 559.983237] R13: ffff99ad0da16010 R14: ffff99ad0da16000 R15: ffff99ad0da162c0
kernel: [ 559.983241] FS: 0000000000000000(0000) GS:ffff99ad21200000(0000) knlGS:0000000000000000
kernel: [ 559.983245] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: [ 559.983248] CR2: 00000000000002de CR3: 00000004bd80a001 CR4: 00000000003606f0
kernel: [ 559.983251] Call Trace:
kernel: [ 559.983263] ucsi_altmode_update_active+0xab/0xf0 [typec_ucsi]
kernel: [ 559.983271] ucsi_connector_change+0x1ae/0x340 [typec_ucsi]
kernel: [ 559.983282] process_one_work+0x1eb/0x3b0
kernel: [ 559.983288] worker_thread+0x4d/0x400
kernel: [ 559.983295] kthread+0x104/0x140
kernel: [ 559.983301] ? process_one_work+0x3b0/0x3b0
kernel: [ 559.983305] ? kthread_park+0x90/0x90
kernel: [ 559.983314] ret_from_fork+0x1f/0x40
kernel: [ 559.983319] Modules linked in: typec_displayport uas usb_storage vmw_vsock_vmci_transport vsock vmw_vmci rfcomm cdc_ether usbnet snd_usb_audio snd_usbmidi_lib r8152 mii cmac algif_hash algif_skcipher af_alg bnep uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common btusb btrtl btbcm btintel bluetooth ecdh_generic ecc binfmt_misc nls_iso8859_1 mei_hdcp intel_rapl_msr snd_sof_pci snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp x86_pkg_temp_thermal iwlmvm snd_hda_ext_core intel_powerclamp snd_soc_acpi_intel_match kvm_intel snd_soc_acpi mac80211 kvm snd_soc_core snd_hda_codec_hdmi snd_seq_midi snd_hda_codec_conexant libarc4 snd_hda_codec_generic snd_seq_midi_event snd_compress intel_cstate ac97_bus snd_pcm_dmaengine intel_rapl_perf snd_rawmidi joydev snd_hda_intel snd_intel_dspcfg input_leds snd_hda_codec serio_raw iwlwifi intel_wmi_thunderbolt snd_seq wmi_bmof snd_hda_core snd_hwdep thinkpad_acpi
kernel: [ 559.983383] cfg80211 snd_pcm nvram ledtrig_audio snd_seq_device snd_timer processor_thermal_device mei_me ucsi_acpi intel_rapl_common typec_ucsi mei intel_soc_dts_iosf intel_pch_thermal typec snd soundcore int3403_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel mac_hid acpi_pad nf_log_ipv6 ip6t_REJECT nf_reject_ipv6 xt_hl ip6t_rt nf_log_ipv4 nf_log_common ipt_REJECT nf_reject_ipv4 xt_LOG xt_limit xt_addrtype xt_tcpudp sch_fq_codel xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c videodev mc coretemp ip6table_filter parport_pc ip6_tables iptable_filter ppdev bpfilter lp parport ip_tables x_tables autofs4 dm_crypt hid_plantronics hid_generic usbhid hid mmc_block crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd amdgpu i915 amd_iommu_v2 cryptd gpu_sched glue_helper ttm psmouse i2c_algo_bit nvme drm_kms_helper nvme_core i2c_i801 r8169 syscopyarea sysfillrect realtek sysimgblt sdhci_pci fb_sys_fops cqhci drm sdhci wmi video
kernel: [ 559.983454] pinctrl_cannonlake pinctrl_intel
kernel: [ 559.983462] CR2: 00000000000002de
kernel: [ 559.983468] ---[ end trace 2246881156bc6574 ]---
kernel: [ 559.983477] RIP: 0010:typec_altmode_update_active+0x1f/0x100 [typec]
kernel: [ 559.983482] Code: 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00 00 55 48 89 e5 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 45 e8 31 c0 <0f> b6 87 dc 02 00 00 83 e0 01 40 38 f0 0f 84 95 00 00 00 48 8b 47
kernel: [ 559.983485] RSP: 0018:ffffbde7400b7db8 EFLAGS: 00010246
kernel: [ 559.983488] RAX: 0000000000000000 RBX: ffff99ad0da16270 RCX: 0000000000000000
kernel: [ 559.983491] RDX: ffff99ad0c2d3628 RSI: 0000000000000000 RDI: 0000000000000002
kernel: [ 559.983494] RBP: ffffbde7400b7dd8 R08: 0000000000000219 R09: 000000000042061e
kernel: [ 559.983497] R10: 0000000000001168 R11: 0000000000000000 R12: 0000000000000000
kernel: [ 559.983500] R13: ffff99ad0da16010 R14: ffff99ad0da16000 R15: ffff99ad0da162c0
kernel: [ 559.983504] FS: 0000000000000000(0000) GS:ffff99ad21200000(0000) knlGS:0000000000000000
kernel: [ 559.983507] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: [ 559.983510] CR2: 00000000000002de CR3: 00000004bd80a001 CR4: 00000000003606f0